Lithium has one available electron in the outer (valence) shell (2s¹).
1s² 2s¹
Answer:
3 moles
Explanation:
3 moles atoms are needed to react with 50 grams of O2 gas.
Answer : The value of equilibrium constant (K) is, 
Explanation :
First we have to calculate the concentration of 

and,

and,

Now we have to calculate the value of equilibrium constant (K).
The given chemical reaction is:

The expression for equilibrium constant is:
![K=\frac{[N_2O]^2}{[N_2][O_2]}](https://tex.z-dn.net/?f=K%3D%5Cfrac%7B%5BN_2O%5D%5E2%7D%7B%5BN_2%5D%5BO_2%5D%7D)
Now put all the given values in this expression, we get:


Thus, the value of equilibrium constant (K) is, 
Answer: change
Explanation:
Change is change and sometimes it can be good and sometimes it can be bad.
P O₂ = 736.2 torr
<h3>Further explanation</h3>
Given
P tot=760 torr
P H₂O = 23.8 torr
Required
P gas/O₂
Solution
Dalton's law of partial pressures stated that
<em>the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases
</em>
Can be formulated:
P tot = P1 + P2 + P3 .... Pn
P tot = P H₂O + P O₂
760 torr = 23.8 torr + P O₂
P O₂ = 760 - 23.8
P O₂ = 736.2 torr